This is a very early version of Brackets, a code editor for HTML, CSS and JavaScript that's built in HTML, CSS and JavaScript.

What makes Brackets different from other web code editors?

Tools shouldn't get in your way. Instead of cluttering up your coding environment with lots of panels and icons, the Quick Edit UI in Brackets puts context-specific code and tools inline.

Brackets is in sync with your browser. With Live Development, Brackets works directly with your browser to push code edits instantly, set breakpoints, and jump back and forth between your real source code and the browser view.
Do it yourself. Because Brackets is open source, and built with HTML, CSS and JavaScript, you can help build the best code editor for the web.
You can see some screenshots of Brackets on the wiki.

Brackets is very early in development, so many of the features you would expect in a code editor are missing, and some existing features might be incomplete or not as useful as you'd want. But if you like the direction it's going, please contribute!

The text editor inside Brackets is based on CodeMirror--thanks to Marijn for taking our pull requests :) See Notes on CodeMirror for info on upcoming things we're planning to contribute to CodeMirror.